Bridget, I mean, Becki - I recall Ms Jones had a problem with a fireman's pole (no innuendo intended) how do you think you will manage a WFP.
No disrespect but you sound like a student or similar, wanting to trawl in some stats for whatever reason.
If you are genuine, then all you have to do is look at past forum posts on the WFP versus ladders debate.
If you want to try WFP seriously, go see Andrew Greenhaugh of Andrew's Water Treatment. He arranges demos to those who are on the brink of decision re WFP